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Effect of Delivery Speeds of Finisher Card Cylinder on Jute Yarn

A. K. M. Mahabubuzzaman
Mechanical Processing Division, Bangladesh Jute Research Institute Manikmia Avenue, Dhaka-1207

Md. Osman Ghani Miazi
Mechanical Processing Division, Bangladesh Jute Research Institute Manikmia Avenue, Dhaka-1207

M. Dilder Hossain
Mechanical Processing Division, Bangladesh Jute Research Institute Manikmia Avenue, Dhaka-1207

Abstract/ Executive Summary:

Finisher Card is an important step in processing line of jute spinning due to the combing action, which causes from its cylinder speed and other rollers. This research work was carried out at spinning department of Bangladesh Jute Research Institute in 2005. In Finisher card, there is a carding and combing action of sliver received from the breaker card. To find out the effectiveness of various speeds of delivery roller at Finisher card cylinder on fibre length and quality jute yarn of 276 tex (8Ibs/spy), these studies were performed. Higher delivery speed (1830 ins/min) of the Finisher card cylinder performed better than any other speeds for good fibre length and quality of jute yarn.

Keywords: Delivery Speeds, Finisher Card Cylinder, Jute Yarn

Location: Bangladesh Jute Research Institute

Start Date: 00-00-2005

End Date: 00-00-2005

Program Area: Farm Mechanization

Commodity: Jute

Objectives:

To find a suitable delivery speed of cylinder, which involves optimum combing and parallalisation action.

Methodology:

One type of jute fibre Bangla white B (BWB) grade was procured as raw material for this experiment. Only Jute fibre was piled with the application of 25% normal emulsion (i.e. 20 % mineral oil, 79.7% water and 0.3% nonidet) and kept for 48 hours for maturation. The entire piled jute was processed on breaker card machine for producing 276 tex. (8 lbs. /spy) all jute yarn. Separately acrylic fiber and BWB grade of jute fibre were taken by weight as per blend ratio (Jute: acrylic= 80:20). Jute fibres were piled with required emulsion and kept for 48 hours for maturation. The acrylic fibres were separated and opened up manually by hand teasing and tufts of certain weights were made. After that the blending was carried out by spreading the component fibers i.e. jute and acrylic fibres in desired proportion (jute: acrylic=80:20) by weight over the Breaker card lattice. The total fibre was processed through Breaker card, Finisher card & the drawing line (1^st, 2^nd & 3^rd) for spinning yarns of 276 tex blended jute yarn. The entire piled jute was processed through finisher card machine by changing the gears of the cylinder in five positions i.e. 54, 58, 60, 66 and 68 for 1453, 1560, 1614, 1775 and 1830 inch/min delivery speeds respectively for producing 276 tex (8 lbs. /spy) yarns. These delivery speeds have been calculated in the following way: The R.P.M. of Motor is 725, Motor pulley diameter is 7 inches and that of machine pulley is 34 inches. The R.P.M. of machine pulley, cylinder, cylinder pinion and stripper driving pulley all become the same, i.e. 725 x 7"/34"x π/π =149.2 rpm. The delivery speed (inch/min)= cylinder rpm x (number of teeth cylinder change pinion/no. of teeth in delivery wheel) x π x diameter at delivery roller. Here, number of teeth in delivery wheel is 74 and diameter of delivery roller is 4.25 inches. Slivers of 5 yards length taken randomly from the breaker card and processed with each of the different delivery speed were weighed. The five different slivers obtained from breaker card were further processed through all the stages of conventional jute processing and 276 tex (8Ibs. /spy) yarns were spun. Finally, the spun yarns were tested as per standard methods.

Source of Information: Bangladesh J. Jute Fib. Res. 2008, 28(2): 25-29 ; ISSN 0253-5424

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

To find out the effectiveness of various speeds of delivery roller at Finisher card cylinder on fibre length and quality jute yarn of 276 tex (8Ibs/spy), these studies were performed. Higher delivery speed (1830 ins/min) of the Finisher card cylinder performed better than any other speeds for good fibre length and quality of jute yarn.

Knowledge Management: Journal